* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #f0f8ff;
    padding: 2rem;
}

.banner {
    width: 100%;
    max-width: 450px;
    border-radius: 15px;
    margin-bottom: 2rem;
    animation: float 3s ease-in-out infinite;
}

.container {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 123, 255, 0.1);
    width: 100%;
    max-width: 450px;
}

.form-title {
    color: #1e90ff;
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

label {
    display: inline-block;
    margin-bottom: 3px;
    color: #4169e1;
    font-weight: 500;
}

input {
    width: 50%;
    padding: 0.3rem;
    padding-bottom: 3px;
    margin-right: 10px;
    margin-left: 30px;
    border: 2px solid #87cefa;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus {
    outline: none;
    border-color: #1e90ff;
    box-shadow: 0 0 8px rgba(30, 144, 255, 0.3);
}

.error {
    color: #ff4444;
    font-size: 0.85rem;
    margin-top: 0.3rem;
    display: none;
}

button {
    width: 70%;
    padding: 10px;
    background: #1e90ff;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    margin-left: 30px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
}

button:hover {
    background: #0066cc;
    transform: translateY(-2px);
}

.reg_log {
    margin-left: 30px;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@media (max-width: 480px) {
    .container {
        padding: 1.5rem;
    }

    .form-title {
        font-size: 1.5rem;
    }
}